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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 17 |
| 5 | 35 |
| 6 | 70 |
| 7 | 142 |
| 8 | 289 |
| 9 | 587 |
| 10 | 1192 |
| 11 | 2420 |
| 12 | 4913 |
| 13 | 9976 |
| 14 | 20257 |
| 15 | 41132 |
| 16 | 83521 |
| 17 | 169593 |
| 18 | 344366 |
| 19 | 699250 |
| 20 | 1419857 |
| 21 | 2883081 |
| 22 | 5854220 |
| 23 | 11887247 |
| 24 | 24137569 |
| 25 | 49012376 |
| 26 | 99521747 |
| 27 | 202083204 |
| 28 | 410338673 |
| 29 | 833210396 |
| 30 | 1691869691 |
| 31 | 3435414471 |
| 32 | 6975757441 |
[1,2,4,8,17,35,70,142,289,587,1192,2420,4913,9976, 20257,41132,83521,169593,344366,699250,1419857, 2883081,5854220,11887247,24137569,49012376, 99521747,202083204,410338673,833210396,1691869691, 3435414471,6975757441] |